package br.com.universidade.filter;

import java.io.IOException;
import java.util.ArrayList;
import java.util.StringTokenizer;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class FiltroSessao implements Filter {

	public void destroy() {
	}

	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) 
	throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest) req;
		HttpServletResponse response = (HttpServletResponse) res;
		String contextoPrimario = request.getServletPath().substring(1, request.getServletPath().length());
		
		Object logado = request.getSession().getAttribute("usuario");
		
		if(!contextoPrimario.equals("login") && logado ==null){
			request.getRequestDispatcher("/index.jsp").forward(request, response);
			return;
			
		}
		chain.doFilter(request, response);
	}

	public void init(FilterConfig config) throws ServletException {
	}
}